Cheapest return flights from Seoul to Ulaanbaatar in May from $388

AirHint found the following cheapest return flights from Seoul (ICN) to Ulaanbaatar (UBN) in May 2026 (see full year).

Return flights

11 May - 14 May Asiana Airlines direct
27 May - 31 May Asiana Airlines direct
27 May - 03 Jun Asiana Airlines direct
16 May - 23 May Korean Air direct
18 May - 22 May Korean Air direct
27 May - 30 May Korean Air direct
01 May - 08 May Korean Air direct

Also check the deals for one-way flights from Seoul to Ulaanbaatar in May.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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